AK47 is like 70 years old vintage.
The AK-47 can be described as even older in that it combined major features of the US M-1 Garand and the German Sturmgewehr 44, iconic infantry weapons of WW II that were developed in the 1920s based on WW I experience. Supporting my larger point, the Russian arms industry has proved unable to produce an acceptable modern successor to the AK-47. In part, this may be because instead of seeking greater accuracy in their main infantry weapon, the Russians have put much effort into better sniper rifles and equipment.